In order to improve the abrasion resistance and aesthetics of the cover of books and periodicals, the cover film has been widely used in the field of publishing. However, with the increasing awareness of global environmental protection, more and more countries have begun to ban the use of laminating processes. In China, the use of UV glazing to replace laminating was also publicized for a time, but due to various reasons, UV glazing has not been promoted and applied, and the laminating process still occupies the dominant material market. A few days ago, the author discussed this issue with Mr. Zhao Pengfei of People's Posts and Telecommunications Press and other industry insiders, and believes that UV glazing alternative coating process currently has some problems at the consciousness level and technical level.
1. Problems in consciousness
The government and people of our country do not pay enough attention to environmental protection issues. In developed countries, as long as there is a hidden danger of environmental protection, a certain technology is strictly prohibited and "one-vote veto" cannot be discussed. However, China has to consider many comprehensive issues such as economic benefits. If the Chinese people's environmental awareness has not been raised to the level of "one-vote veto", "UV glazing instead of coating process" is empty talk.
2. Problems at the technical level
At present, the UV glazing process is not very mature, and some technical problems need to be solved, which is the direct reason restricting the promotion of UV glazing technology.
(1) The primary purpose of folding, abrasion resistance and cost coating and glazing is to beautify and protect the cover of books and periodicals. However, the folding resistance and abrasion resistance of domestic UV varnish are not ideal. It is manifested that the book often breaks at the spine corners and crimping points after reading many times; the cover of the book is easily worn out during shipment and leads to scrapping.
Some professional refractory oils abroad can solve the above problems, but the cost is relatively high, even higher than the film.
The magazine has strong timeliness, short sales cycle, and readers generally rarely save it after reading. Therefore, the wear resistance of varnish is relatively low. The glazing process can basically meet the requirements. At present, some magazines have begun to use the glazing process.
(2) If the pressure resistance is not handled properly, the varnish layer at the spine side pressure line is easy to break.
(3) Appearance characteristics After glazing, the thickness of the cover does not increase much, and it looks relatively soft. If you use paper of the same thickness, the appearance effect of glazing is not as good as laminating.
3. Advantages and development prospects of UV coating
Although there are still some difficulties in promoting the UV glazing process in the publishing field in China, the coating process will not retreat from the dominant position in a short time, but it should be recognized that the promotion of UV glazing process is the general trend, and various constraints will be gradually overcome .
First of all, as the 2008 Olympic Games approaches, the country will pay more attention to environmental protection issues, and the national environmental awareness will also increase rapidly. The pace of glazing to replace the film is bound to accelerate. Technically speaking, a glazing machine that is both environmentally friendly and of superior quality has been launched. Domestic varnish manufacturers are attracted by huge business opportunities, and they have also accelerated the process of solving the problems of folding resistance, wear resistance and cost. The shortcomings of the above are slightly improved, and UV varnishing is no longer a distant matter.
In addition, UV glazing also has many advantages that the coating does not have: â‘ The solid content of the varnish used is 100%, without solvent evaporation, which is safe and environmentally friendly. â‘¡The drying speed is fast, not limited by the type of substrate. The surface of the printed product after UV coating is smooth and bright, and the hardness is high. â‘¢ The production efficiency is high, which can greatly reduce the production cost. The comprehensive cost of 250gm2 coated paper coating and 200gm2 coated paper coating is almost the same. In this way, at the same cost, the use of thick paper as the cover can completely compensate for the lack of gloss in appearance characteristics. â‘£Some representative domestic enterprises are constantly researching new technologies to promote the improvement of the overall level of UV glazing technology in China, which will become the most powerful guarantee for the promotion of UV glazing technology.
Third, domestic glazing equipment can fully meet the demanding UV glazing requirements. The speed of YT1A1 folio sheet glazing machine developed and produced by Zhenhengli Company can reach 8000 sheets hours, which can be matched with high-speed unit offset printing machine. It can perform partial full-plate UV glazing, partial full-plate water-based glazing, and sheet-fed flexographic printing. In addition, the machine has also been significantly improved in processing effects and support for subsequent processes. It adopts the principle of flexo printing for UV glazing. The configuration of the ceramic anilox roller has more than 600 line inches. It can accurately control the amount of varnish transmission for fine glazing, which can overcome the varnish coating of traditional roller coating glazing machine Too thick, the printed matter is easy to crack, and it is difficult to stamp the anodized aluminum.
We believe that more companies will join the glazing technology research and development team to greatly promote the development and promotion of this technology. With the increasing awareness of environmental protection in the Chinese people, UV glazing and water-based glazing will have a great effect in the publishing industry, and UV glazing alternative film will eventually become a reality.
Eye and Lip Makeup Remover is a kind of makeup remover that is specially used to remove makeup for delicate eyes and lips. The makeup remover can gently cleanse the skin around the eyes and lips, making the skin around the eyes and lips firm and smooth. Generally, such products on the market are separated from oil and water, and need to be shaken before use.
The eyes and lips are the sensitive and delicate parts of the skin. When we make up, we have to use some mild cosmetics to make up the eyes and lips.
Of course, makeup remover is no exception. The makeup remover used on the face is not suitable for use on the eyes and lips. Therefore, a makeup remover that is specially used to remove the delicate eyes and lips is developed, namely, eye and lips. Makeup remover.
The all-oil type can effectively remove heavy foundation and waterproof makeup. For example, it can easily dissolve Mascara , Lipstick, etc.
The semi-oily makeup remover is characterized by the separation of oil and water. Shake it before use.
The all-water type is more suitable for dry skin, with strong irritation and poor makeup removal effect.
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